YouTube mobile clients may now require different password

[slitchfield]

Having linked your YouTube and Google accounts last year, YouTube has now enforced the use of the latter's password for signing into YouTube from mobile clients such as the Symbian/S60 version (available in, for example, the Ovi Store and on m.google.com). Screens and more info below.

Read on in the full article.

[dougalzene]

I signed in using my Youtube details then a few days later it prompted for and rejected the same details. I found I could "sign out" in the menu, even though it seemed I was not logged in. Then I again entered my Youtube username and password which were accepted and have been since. Of course, this might just be part of the changeover.

[walmark]

How would one find out there is a new client available?

I'm asking, because I had the previous client on my n97 mini (the one that doesn't support sign in). It didn't have any option to check for updates. Also, when I went to Ovi store and found you tube client (supposedly the new one), it detected that I have one installed and only offered to "Launch"... no info on download or upgrade.
Only after I found out on this site that there is new one available, I removed the old one from the phone and then downloaded new one from Ovi. But if I didn't check here, why wouldn't my phone tell me (or Ovi) that update is available?